TKVS is a standard SAP Table which is used to store CO Versions data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TKVS table consists of various fields, each holding specific information or linking keys about CO Versions data available in SAP. These include VERSI (Version), EXUVS (Exclusive Use of Version), PLNDF (Record planning data for the relevant version?), ISTDF (Record actual data for the relevant version?)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .